RESUMEN
Parasitic infections are distributed worldwide and affect hundreds of millions of individuals-primarily those living in endemic areas or in regions with a high rate of immigration from endemic areas-causing significant morbidity and mortality. A broad spectrum of parasitic infections (eg, amebiasis, malaria, trypanosomiasis, ascariasis, strongyloidiasis, dirofilariasis, cystic echinococcosis, schistosomiasis, paragonimiasis) frequently affect the lungs, mediastinum, and thoracic wall, manifesting with abnormal imaging findings that often make diagnosis challenging. Although most of these infections result in nonspecific abnormalities, familiarity with their imaging features as well as their epidemiologic, clinical, and physiopathologic characteristics may be helpful to the radiologist in formulating an adequate differential diagnosis.
Asunto(s)
Enfermedades Parasitarias/diagnóstico por imagen , Infecciones por Cestodos/diagnóstico por imagen , Infecciones por Cestodos/epidemiología , Infecciones por Cestodos/parasitología , Humanos , Infecciones por Nematodos/diagnóstico por imagen , Infecciones por Nematodos/epidemiología , Infecciones por Nematodos/parasitología , Enfermedades Parasitarias/epidemiología , Enfermedades Parasitarias/parasitología , Infecciones por Protozoos/diagnóstico por imagen , Infecciones por Protozoos/epidemiología , Infecciones por Protozoos/parasitología , Radiografía , Infecciones por Trematodos/diagnóstico por imagen , Infecciones por Trematodos/epidemiología , Infecciones por Trematodos/parasitología , Medicina TropicalRESUMEN
The author presents a clinical and anatomopathologic study of six cases of abdominal angiostrongyloidiasis seen in the southeast part of the state of Paraná and western part of the state of Santa Catarina--Brazil. The importance of the disease, in our region is such that it should be considered in the differential diagnosis of acute abdominal conditions in children and adults. The number of cases in the last two years have increased probably related to the extensive use of pesticides on corps.
Asunto(s)
Parasitosis Intestinales/diagnóstico , Infecciones por Nematodos/diagnóstico , Abdomen Agudo/etiología , Adulto , Anciano , Angiostrongylus/aislamiento & purificación , Animales , Niño , Preescolar , Diagnóstico Diferencial , Femenino , Humanos , Lactante , Parasitosis Intestinales/diagnóstico por imagen , Parasitosis Intestinales/patología , Masculino , Persona de Mediana Edad , Infecciones por Nematodos/diagnóstico por imagen , Infecciones por Nematodos/patología , RadiografíaRESUMEN
111Indium-oxine-labelled rat eosinophils were injected i.v. into rats infected with Nippostrongylus brasiliensis and controls. Radionuclide imaging was done to measure the rate and extent of radioactive uptake into different regions of the body in vivo. Radioactivity appeared first in the lungs then in the livers and spleens. The distribution of radioactivity and parasites was studied by gamma counting, histology and parasite counts. In infected rats, increased amounts of radioactivity localized in the skin, lungs and small intestines during the dermal, pulmonary and intestinal stages of the disease. It was concluded that localization of radioactivity was closely related to the tissue distribution of migratory larvae and adult worms. This technique may be of value in measuring alterations in eosinophil distribution and tissue localization in vivo, especially in helminthic infections and other disease where many eosinophils accumulate in tissues.